题目内容

The plus (+) and minus (-) signs in an electric circuit diagram are used to define .

A. . voltage polarity
B. . current direction
C. . power flow
D. . absorbed power

查看答案

搜索结果不匹配？点我反馈

更多问题

According to the passive sign convention, if the power has a plus sign, power is by the element.

A. supplied
B. absorbed
C. generated
D. transferred

Is current in any electric circuit always a constant-valued function? Why?

How does current change when the time rate of charges is greater?

How to interpret the uab = -1 volt in two ways?